Screw press sludge dewatering equipment

The spiral stacking sludge dewatering equipment is a kind of equipment based on the structural design of the combination of spiral shaft and lamination, which realizes the continuous, automatic and low-energy dewatering treatment of sludge. Its working principle, main features and applications are as follows: Working principle of spiral stacking sludge dewatering equipment: 1. Sludge conveying and concentration*: The sludge to be treated enters the equipment through the feed port, and the spiral shaft rotates under the drive of the motor to push the sludge forward. During the sludge conveying process, due to the large gap between the laminations, the sludge is initially dehydrated by gravity to achieve initial concentration. 2. Screw pressing dewatering: As the sludge moves toward the outlet of the equipment, the gap between the laminations gradually decreases, exerting an increasing squeezing force on the sludge. At the same time, the spiral blades exert a dual axial and radial squeezing effect on the sludge, forcing the water in the sludge to be discharged through the gap between the laminations. Due to the unique design of the laminations, the sludge is not easy to be blocked during the squeezing process, and the dewatering effect is gradually enhanced. 3. Self-cleaning function: There is a relative movement between the laminations and the spiral shaft, and the laminations are constantly refreshed to prevent sludge blockage and maintain good filtration performance. In addition, the equipment is also equipped with an automatic spray cleaning system to regularly rinse the surface of the stack to ensure dehydration efficiency and equipment operation stability. 4. Dehydrated mud cake discharge: After sufficient squeezing and dehydration, the sludge forms a dry and hard mud cake, which is discharged from the mud discharge port at the end of the equipment. The dehydrated mud cake has a low moisture content and a greatly reduced volume, which is convenient for subsequent treatment or disposal. Main features of the spiral stack sludge dehydration equipment: - Continuous operation: The spiral stack sludge dehydration equipment can achieve continuous feeding, continuous dehydration, and continuous mud discharge. It does not need to stop frequently to clean the filter belt like traditional belt dehydrators, which improves work efficiency. - Low energy consumption: The equipment has low operating power and does not require large auxiliary equipment such as high-pressure pumps, so the energy consumption cost is low. - Small footprint: The equipment is compact, simple in structure, occupies small space, and is suitable for various site conditions. - Strong adaptability: It is suitable for the dehydration of various types of sludge such as oily sludge, sticky sludge, organic sludge, etc., and has strong adaptability to sludge concentration fluctuations. - Easy maintenance: no wearing parts such as filter cloth and filter belt, small maintenance workload and long service life. Application of spiral stacking sludge dewatering equipment: spiral stacking sludge dewatering equipment is widely used in municipal sewage treatment, industrial wastewater treatment, food processing, chemical industry, pharmaceutical industry, papermaking, agriculture and other fields to dewater various types of sludge, including: - Municipal sewage treatment plant: dewater the residual sludge generated in the process of domestic sewage treatment to reduce the volume of sludge and facilitate subsequent transportation and disposal. - Industrial wastewater treatment: dewater the sludge generated in the wastewater treatment process of industries such as food, chemical industry, pharmaceutical industry, papermaking, etc., to reduce the cost of sludge treatment and improve resource utilization. - Food processing industry: dewater the organic sludge generated by slaughterhouses, fruit and vegetable processing plants, wineries, etc. to achieve waste reduction and resource utilization. - Agricultural field: dewater the fecal sludge generated by farms and the sediment in farmland drainage, etc., for the production of organic fertilizer or as a soil conditioner. In general, the spiral sludge dewatering equipment, with its unique structural design and working principle, achieves efficient, energy-saving and continuous dewatering of sludge, and has become a widely used equipment in the field of modern sludge treatment.